The Judge is Blind: Why LLM-as-a-Judge Correlates Poorly with Human Domain Experts

RAG frameworks love using GPT-4o as a judge to compute faithfulness and answer relevance scores. In specialized legal, medical, and tax domains, LLM judges fail to detect 40% of subtle hallucinated assumptions. Here is the Multi-Tier Deterministic Eval Matrix.

Written and maintained by Hassan Nazir, Forward Deployed Engineer and Applied AI practitioner.